Accreditation of radiated emission tests performed on train and complete vehicle

Audone, B.; Gaggelli, A.; Masini, P.; Neri, S.

doi:10.1109/emceurope.2008.4786796

Cited by 4 publications

(2 citation statements)

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“…Clearly, in different phase section, the magnetic field distribution is different. The selection of the two coefficients 0.25 and 1.1 [6] in the equation above mainly consider three factors as follows: (a) The first factor is the effect of high voltage bus. For three main transformers are assembled in car 2, 5, 7 uniformly, the magnetic field coupled into the window is relevant to ground backflow current.…”

Section: Emission Mechanism Analysis Emission Mechanism Analysismentioning

confidence: 99%

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Measurement and analysis of low frequency magnetic field in multiple unit train

Dapeng

Zhu

et al. 2013

2013 5th IEEE International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications

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By actual measurement, low frequency magnetic field distributions in the multiple unit train were obtained. The data shows that the field is in the permission range as a special industrial environment according to international low frequency magnetic field standards and GB 9175-88. Taken into account of the multiple unit train's specific electrical structures (including overhead contact system, car roof, windows and rail), pantograph catenary arc's low frequency field emission modeling and mechanism analysis were completed. Thus, we get the LF magnetic field distribution regularity and prove that the interior intense magnetic field in the multiple unit train mainly derives from the window current induction. Moreover, a pantograph catenary contact loss criterion is proposed in terms of magnetic field probability.

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Section: Emission Mechanism Analysis Emission Mechanism Analysismentioning

confidence: 99%

“…For convenience, the multiple unit train's total current is assumed to be 150 A [6], both the pantograph and catenary are considered about 4 meters away from the test point. Clearly, in different phase section, the magnetic field distribution is different.…”

Section: Emission Mechanism Analysis Emission Mechanism Analysismentioning

confidence: 99%

Measurement and analysis of low frequency magnetic field in multiple unit train

Dapeng

Zhu

et al. 2013

2013 5th IEEE International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications

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Pre-Accreditation With a Unified Coil for Radiated Interference Between Unspecified Balises and Railway Traction Inverters

Hatsukade,

Wada

2024

IEEE Access

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Modern electric railway vehicles are faced with the challenge of achieving electromagnetic compatibility (EMC) compliance with railway signaling systems. Currently, no established countermeasures or design methods that guarantee passing the EMC compliance test are available. Therefore, the enhancement of EMC management during vehicle manufacturing processes is imperative. This study devised a pre-accreditation method to be implemented at the vehicle completion stage, prior to the EMC compliance test. The proposed method entails the substitution of real ground signaling devices, whose parameters are difficult to obtain, with unified coils. The effectiveness of this approach is validated by observing whether the gain difference remains consistent when using both an exciting coil and a test train. To illustrate this method, we selected the platform screen door (PSD) balise as a representative signaling device, which is widely utilized in various railway stations. The unified coil employed in this study can be easily fabricated. First, we measured the gain difference (the ratio between the induced voltage of coils and the exciting coil current) between the PSD balise and unified coil. Next, we measured the unknown magnetic flux induced by an 8-car electric multiple unit test train by utilizing the PSD balise and unified coil. Finally, we calculated the measured difference between them. The gain and measured differences properly agreed (within 6 dB) across a wide frequency range of 200 kHz to 4 MHz.

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